title: FDG-avid venous malformation could mimic malignancy on 18F-FDG PET/CT.
abstract: A 49-year-old female patient with melanoma underwent FDG PET/CT for surveillance. PET/CT demonstrated multiple mildly FDG-avid soft tissue attenuation lesions in the pelvis of unknown etiology. MRI was performed for further evaluation. MRI demonstrated multiple dilated vascular structures measuring up to 2.5 cm consistent with venous malformation. Follow-up PET/CT 1 and 2 years later demonstrated stable FDG-avid soft-tissue densities in the pelvis representing venous malformation. No recurrence or distant metastases were identified. This case demonstrates how a benign FDG-avid vascular malformation on PET/CT could have been misinterpreted as malignancy. Biopsy of a vascular malformation could have had dire consequences.
authors.affiliation: From the *Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York; and †Department of Radiology, Weill Cornell Medical College, New York, NY.
authors.forename: Alireza
authors.initials: A
authors.lastname: Mojtahedi
authors.forename: Ravinder K
authors.initials: RK
authors.lastname: Grewal
authors.forename: Gary A
authors.initials: GA
authors.lastname: Ulaner
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000000981:diagnostic imaging*; D010690:Phlebography; D049268:Positron-Emission Tomography; D014057:Tomography, X-Ray Computed; D014680:Veins / Q000002:abnormalities* / Q000000981:diagnostic imaging*
chemical_list: D019788:Fluorodeoxyglucose F18